Machine for rounding or trimming and channeling boot and shoe outer soles and the like.



N 7,287. PATENTED DEG.4 190s.

88 A M. .T.-DENNE.

MACHINE FOR ROUNDIN'G 0R TRIMMING AND 'GHANNBLING BOOT AND SHOE OUTER SOLES AND THE LIKE. APPLICATION FILED nno. 21,1905.

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PATBNTED DEC. 4, 1906.

M. T. DENNE.

MACHINE FOR ROUNDING 0R TRIMMING' AND GHANNELING BOOT AND SHOE OUTER SOLES AND THE LIKE.

APPLICATION FILED DBC.21,1905.

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No. 837,287. PA TENTED DEC. 4, 1906.

- M. T. DENNE.

MACHINE FOR ROUNDING 0R TRIMMING AND OHANNELING BOOT AND SHOE OUTER SOLES AND THE LIKE.

APPLICATION FILED DBO. 21,1905.

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No. 837,287. PATENTED DEC. 4, 1906.

M. T. DENNE. I MACHINE FOR ROUNDING OR TRIMMING AND GHANNELINC- BOOT AND SHOE OUTER SOLES AND THE LIKE.

APPLICATION FILED DEC. 21, 1905.

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UNITED STATES PATENT OFFICE.

MARK THOMAS DENNE, ()F RUSHDEN, ENGLAND.

MACHINE FOR ROUNDING OR TRIMMING AND CHANNELING BOOT AND SHOE OUTER SOLES AND THE LIKE.

Specification of Letters Patent.

Patented Dec. 4, 1906.

Application filed December 21, 1905. Serial No. 292.771.

1'0 ztl/ w/mm it may concern:

Be it known that 1, MARK THOMAS DENNE, a subject of the King of Great Britain, residing at Rushden, county of Northampton, England, have invented new and useful Improvements in Machines for Rounding or Trimming and Channeling Boot and Shoe Outer Soles and the Like, of which the following is a specification.

My invention relates to improvements in machines for simultaneously rounding or trimming and channeling boot and shoe soles when attached or cemented or laid, as it is technically termed, to the insoles and welts of lasted boots or shoes. Machines of this type are commonly provided with a reciprocating knife working at right angles to the edge of the work and in opposition to an edgegage adapted to fit between the welt and the upper upon the last and to serve to determine the distance from the point where the welt joins the upper to that at which the edge out is to be made, These edge-gages, with their operating mechanism, are generally complicated in character and are manipulated to give a different width of edge while the machine is engaged in cutting the edge. They generally consist of an inner portion adapted to take the pressure of the knife or act as the platen of a cutting-press upon which the work rests and of an outer skeleton frame embracing this inner portion and to which the different movements are imparted to produce the varying width of edge, according as to whether Scotch, Baltimore, or other edges are required.

The object of my invention is to effect the various operations hitherto performed by several different parts by imparting the necessary motions to one part, also to effect a motion of the edge-gage in a vertical line, so that a gradually-increasing width of ed e may be obtained on a .portion of the wor i, which increased width may be gradually reduced in the same way, the rate of increase and decrease being under the control of the operator, but in such a way that the machine will make a perfect outward curve on the edge of a given radius, which may be changed for shorter return curve, or vice versa.

A further object of the invention is to dispense with the use of the hands for manipulating the mechanism for producing the varying width of edge, so that they are freeto control the movements of the work.

According to my invention I employ a simple abutment for supporting the work against the edge-knife, to which abutment I impart the several motions necessary, the said abutment also acting as an edge-gage in the sense referred to above. This I arrange to be moved, first, in a line with the feed motion of the knife and its fitting and simultaneously with it for the same length of stroke; secondly, outwardly away from the knife on the return stroke to clear the knife-edge; thirdl returning to the starting-point of the feed independently of the return motion of the knife and its fitting; fourthly, inwardly to bring it to its resting position, and, fifthly, on a vertical line to produce thedifferent width of edge and at right angles to the direction of knifestroke.

The length of a previouslydetermined curve for the varying width of edge is set by the knee or foot of the operator by the use of stops to the knee-lever or the treadle and does not require skill on the part of the operator except in so far as the knowledge of the time to set the mechanism in action is concerned. The rate of increase and decrease of the width of edge may be altered independently one of the other, so that a quick outward motion may precede a slow return on one shoe, (we will say the left-hand shoe,) and this may be reversed and the slow motion may be an outward one and the quick a return movement on a right-hand shoe.

The machine is constructed with a vertical driving or cam shaft to simplify the connections to' the reciprocating knife and effect a more direct drive than heretofore.

In the accompanying drawings, Figure 1 is a side elevation of the upper part of my improved machine. and-Fig. 3 a sectional front elevation, of the said upper part of the machine. Fig. 4 is a section on the line 4 4, Fig. 2; and Fig. 5 is a section on the line 5 5, Fig. 1. Fig. 6 is a sectional elevation of the base and standard of the machine, but drawn to a smaller scale than the preceding figures. Fig. 7 is a section on the line 7 7, Fig. 6. Fig. 8 is a section on the line 8 8, Fig. 6, but drawn to the same scale as Fig. 1. Fig. 9 is a side elevation of ratchet-and-pawl mechanism hereinafter described. Fig. 10 is a front view of stop mechanism hereinafter described; and Fig. 11 is a section on the line 11 11, Fig. 10. Fig. 12 is a plan view of a detail.

Fig. 2 is a sectional plan, 9 5

In carrying my invention into effect I provide a frame a, carried on the upper part of a standard or pedestal a and provided with vertical bearings a 0, in which is mounted the shaft b, upon which is fixed the camdrum 1) for imparting motion to the different parts of the mechanism in the manner hereinafter described. This shaft 1) receives its motion from a belt-pulley c, Fig. 6, in the base of the pedestal a, the said pulley being mounted upon the shaft 0 and provided with a friction-surface 0 which cooperates with a disk 0 secured upon the lower end of the shaft b or of an extension thereof in such a manner that when the pulley c is moved into frictional contact with the disk 0 rotary motion will be imparted to the said shaft b. The disk 0 is provided with a hollow boss 0, which fits onto the vertical shaft 0.

In order to lift the pulley c to-bring it into contact with the disk 0 the said pulley is carried upon the ball step-bearing d, which is vertically movable on the shaft 0. The pulley and bearing rest upon the end of the two ins d passing through the frame on each side of the fitting of the shaft 0 and acted upon by a treadle-lever d.

e, Figs. 1 to 4, is the knife for rounding the edge of the sole, the said knife being fixed to the bar 6, which is adapted to slide longitudinally in a guide 6% on the under side of a block e the block itselfbeing adapted to slide at right angles to the direction of movement of the bar 6 upon a horizontal guide 6 carried upon upward extensions or pillars e e on the frame a.

Reciprocating motion is imparted to the knife-bar e by the pin f of a crank fixed to the upper end of the vertical shaft 1), the said crank-pin being connected to a pin f on the under side of the bar 6 by a connecting-rod The movement of the block e upon its guide 6 is eflected through the medium ofa cam-groove g in the barrel 1), which groove acts upon a lever 9, attached to the lower end of a short vertical shaft 9 carried in a bearing 9 in the frame and having fixed to its upper end an arm g, carrying at its free end a block 9 adapted to slide in a slot g on the under side of the slide-block e The shape of the cam g is such that at each rotaa tion of the barrel the block is moved to and fro, carrying with it the knife-bar e.

The driving mechanism for the slide-block e and for the knife-bar e are arranged in such relation to each other thatthe knife is caused to travel in a rectangular path that is to say, the knife'eis first moved forward to penetrate the work, then to the left to feed the work, and then retracted, and when at the rear end of its inward stroke is moved laterally to its starting position.

his the edge-gage or abutment for supporting the Work against the edge of the knife 6, the said abutment being carried by the horizontal arm 71/, pivoted upon the boss h of the frame a, a pin h carried by the guide 6 and having at its upper end a collar h, bearing upon the top of the arm h, serving to prevent the lifting of the said arm. The abutment h is not fixed to the arm h, but is mounted upon a slide 1', adapted to move vertically in a guide-block i, pivoted in a bifurcation i on the end of the said arm h. The pivot-pin i of the block 11 is formed with teeth, which engage with the teeth of a rack t on the slide 'L for raising and lowering said slide in the manner hereinafter described.

The arm h is operated. to move the abutment h in the arc of a circle, so that the sald abutment follows the knife 6 in its feeding movement, carrying with it the work. This movement is produced by the cam-groove in the barrel 1) through the medium of-a lever j, fixed to the lower end of a shaft 3' carried in bearings 1n the frame a and having at its upper end an arm 3' which engages with a slot or recess j in a lug 3' on the side of the arm h. The edge-gage h is returned to its starting position while the knife is still in the work by the further action of the groove 7' upon the lever j.

The edge-gage or abutment h is capable of partaking of a motion away from the knife c to allow of passing the said knife which projects through the work and is again moved toward the knife upon the completion of its return stroke. The above movements are controlled by the disk 75, carrying the crank-pin f, the said disk being notched at 1c, Fig. 5, and having a roller on one end of a lever k bearing against it, the said lever k being pivoted to the frame at 7c and having jointed to it one end of a connecting-rod 7C the other end of which is inserted through an arm k on the block t, the said rod 76 having a head or enlargement, which Wlll cause therod to hold the block if rigid while the roller on thelever k is' running upon the plain part of the disk It, and when the said roller is running in the recess it allow the block 1; to swing outward to move the abutment it away from the work.

The motion of the abutment h in a vertical direction for the purpose of determining the distance from the point where the welt joins the upper to that at which the cut is to be made is effected through the medium of the rack i and the pinion engaging therewith, hereinbefore described. To impart motion to this pinion, I provide the following mechanismthat is to say, in bearings Z 1 upon the arm h I mount the shafts Z Z 1*. The shaft 1 is provided with a recess, so that it will slide onto the shaft V, which is fixed on the bearing L, while the shaft Z which is directly carried in the bearing Z, is hollow and has the shaft Z passing through it. Upon the shaft Z is fixed a quadrant m, upon the shaft Z is fixed a friction-disk m, and upon the shaft Z are loosely mounted two ratchet- Lll wheels m m Figs. 2, 4, and 9, having opposing teeth and forming a second friction-disk in contact with the disk m. Between a col lar on the end of the shaft 1* and the bearing 1 is a spring m*, which serves to draw the friction-disk m into frictional contact with the bearing Z, and between a collar on the end of the shaft Z and the end of the shaft Z is another spring m which serves to draw the ratchet-wheels m into contact with the friction-disk m by means of a flange 1% upon the inner end of the shaft Z.

The disk m carries a crank-pin n, Fig. 1, connected by a rod n to a lever-arm on the shaft "L hereinbefore described, so that any movement imparted to the disk m will correspondingly move the pinion of the shaft 2' and the slide 1', while the friction between the disk m and the bearing Z will be sufficient to normally retain the said slide to any position to wh1ch it may be adjusted, but insufficient to prevent the disk from being rotated by contact with the ratchet-disk The quadrant m is formed with an arm 0, carrying two pawls 0 designed to engage, respectively, with the ratchet-wheels m m, and has engaging with it a quadrant p, formed on one end of a lever mounted on a shaft p, carried in the arm h, and the other end of which lever is connected by a rod 29 to one end of a lever p pivoted at p" to the sides of the frame a, the said lever having an arm 29"", carrying a roller which engages in the circumferential camgroove p in the barrel 1). ith this arrangement as the barrel b rotates an oscillatory movement will be im parted to the arm 0, carrying the pawls 0 0 In connection with the pawls 0 0 and the ratchet-wheels m m I arrange a curved shield g, which normally occupies a position to hold the said pawls out of engagement with the said ratchet-wheels, so that the oscillations of the arm 0 will not impart movement to the said ratchet-wheels. This shield is carried by a plate or disk q, mounted between the said ratchet-wheels, and has upon its edge or periphery teeth Q2, with which a quadrant Q3 engages. This quadranthas an arm or extension connected by a rod 1 to an arm on one end of a shaft carried in a bearing on the pedestal a, the other end of the said shaft g carrying a lever Q8, shaped at the extremity to be moved by the knee of the operator.

With the construction just described it will be seen that the shield g may be rocked or oscillated to move it out of the path of one or the other of the pawls, so that such pawl is free to engage with the corresponding ratchetwheel and rotate the same to impart movement to the disk m, and thence, through the rod 12/, to gradually move the slide 'i, carrying the abutment h.

It will be understood that the shield can be so moved that the pawl can engage with the ratchet-teeth, so as to move it a distance of one tooth or two or more teeth, according to the speed at which the widening or narrowing of the edge of the boot is to take place. It will be evident that any speed of the gage in either direction is obtainable and that this direction is instantly reversed by operating the knee-lever so as to take the active pawl out of operation and allow the other pawl to come into operation.

In connection with the mechanism for operating the edge-gage slide i I advantageously employ a stop for limiting the movement in both directions. This stop may consist of a lug r, Fig. 1, upon the rod n, such as that shown in Fig. 1, which lug cooperates with two adjustable stop projections r 1", against one or other of which the lug 1 will impinge. When this takes place, the movement of the lever n and of the edge-gage slide will cease, the ratchet-wheel to which motion is imparted slipping against the disk m. It will be seen that with this stop mechanism it will be impossible for the operative to widen or narrow beyond certain definite points.

To enable the operator to determine the in termediate position for the lever g that is to say, a position in which the shield q occupies a central position relatively with the pawls 0 0 so that the latter are inoperative without attentionI provide on the said lever a rollerstud s, with which cooperates a V-shaped plunger-stop s, acted upon by a spring 8 which is compressed when the lever q is moved to the right or left hand, owing to the action of the roller 8 upon the inclined sides of the Vshaped stop 8, and the reaction of which spring serves by causing the said inclined sides to bear against the roller-stud to return the lever g to its central position. This stop 8 is arranged to slide in a block 8 which is adjustable laterally by means of set screws 8 8 (see Figs. 8, 10, and 1].) to allow of determining the exact point at which the knee lever shall normally rest. 3 s are stops which serve to limit the extreme movement of the knee-lever. By the use of this mechanism the operator without any further action on his part will be able to insure that a correct motion is being transmitted to the edge gage and that a smooth curve or edge will be obtained if the knee-lever remains undisturbed when once moved to the operative position.

To effect the channeling of the sole, I provide the following arrangement of mechanismthat is to say, in the front of the frame a I insert a horizontal slide 25, (shown detached in Fig. 12 in connection with which is a spring the normal tendency of which is to press the slide forward. This horizontal slide has also upon it a series of rack-teeth F, with which a pinion t on a shaft if, provided with an operating-handle 25, engages in such a man ner that by rotating the said handle the slide can be moved backagainst the pressure fix on the shaft a notched disk 1 with which the V-shape'd end of a sliding spring-pa'wlo is designed to engage. This spring-pawl carries a block 12 with which a pin on one end of a bell-crank lever Q23 makes contact, the other arm of the said bell-crank lever being in contact with an extension '0 on the lever 7:3 hereinbefore described, in such a manner that when the said lever lc is released by the cam recess 7c the spring-pawl i) will be moved into contact with the notched disk to hold the horizontal slide t against the pressure of the spring t In the drawings the slide t is shown in its most rearward position.

To adjust the position of the channel-cutter a relatively with the rounding-knife efor instance, when cutting the channel in the waist of a solethe said slide uis designed to be moved down by a treadle and chain w", Fig. 6, a spring w, Fig. 4;, acting against the under side of the head of a rod w, inserted into an extension at the lower end of the said vertical slide u, serving to return the said slide, whose upward movement is limited by a set-screw w also carried in the, extension of the said slide a and which comes against the under surface of the front portion of the horizontal slide 15. The downward movement is limited by the head of the rod w making contact with the upper part of a sleeve w encircling the said rod.

The operation of the machine hereinbefore describedis as follows-that is to-say, the

boot the sole of which is to'be rounded and channeled is placed against the table it, and the latter is then pressed back so that the lower edge of the abutment h can enter the space between the sole and the upper' The work being thus in position and properly placed, the operator depresses the treadle d, whereupon the rounding-knife is moved outwardly into the work and then laterally to feed the work, the arm h, carrying the abutment, at the same time moving laterally with the work. The knife having'arrived in this position, the abutment h is allowed to swing outwardly by the cam-recess 75 and is moved backward to its original position by the cam-v groove the table a at the same time being locked to prevent it from moving under the action of the spring t. The abutment having arrived at its original position, the knife is drawn backward out of the work and moves to its starting position at which it again enters the work, and so on. As the work is being fed by the knife the portion of the sole that is drawn pastthe channeling-knifeis channeled in the desired manner by the cutter u I/Vhen during the rounding operation an increasing distance is to be allowed between the junction of the welt with the sole and the edge of the said sole, the operator by means of the knee-lever 9 moves the shield g in the manner hereinbefore described and retains it in this position until the desired increase in width is obtained. When the width is to be again decreased, the knee-lever g is moved in the reverse direction.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1. In a machine for rounding or trimming the soles of boots and shoes, the combination with the main frame, of a block pivotally mounted on said frame, an abutment pivoted to said block, a trimming-knife mounted to slide toward and from said abutment, means for moving said abutment and knife together laterally to effect the feeding of the sole, and means for holding the abutment against the sole during the feeding of the same and to permit it to swing on its pivot away from the sole in its return movement, substantially as described.

2. In a machine for rounding or trimming the soles of boots or shoes, the combination with an abutment and trimming-knife of a movable block carrying the said abutment, and a separate movable block carrying said knife, means for moving the abutmentwarrying block and said-knife-carrying block together to effect the feeding of the work, and means for returning said abutment and its carrying-block to their original position while the knife is still in the work, substantially as described.

3. In a machine for rounding or trimming the soles ofboots and shoes, the combination with an abutment and a reciprocatingtrimming-knife, of a pivoted block carrying said abutment and a knife-carrying block mounted to slide at right angles to the line of move-- ment of said knife, means for moving said blocks together to effect thefeeding of the work including a construction whereby the knife is returned to its original position after the abutment has been so returned, substantiallyas described.

4. In a machine for rounding or trimming the soles of boots and shoes, the combination with the main frame having a work-table, of.

a trimming-knife movable toward and from the work in a horizontal plane, an abutment movable outward from the work-table and toward. the same in a horizontal direction and means for moving said abutment bodily toward and from the work-table in a vertical direction, substantially as described.

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5. In a machine for rounding or trimming the soles of boots and shoes, the combination with the main frame, of a block pivoted to the main frame to swing in a horizontal direction, an abutment pivotally mounted on the said block, a reciprocating trimmingknife mounted in a block arranged to slide transversely of the line of movement of said knife, said abutment and trimming-knife constituting the feeding mechanism for the machine, a work-table mounted to slide in the main frame, and means to lock the table in its outward position during the retrograde movement of the feeding devices, substantially as described.

6. In a machine for rounding or trimming the soles of boots and shoes, the combination with the main frame, of a block pivoted to swing in a horizontal direction above the main frame, an abutment pivotally mounted on said block, a reciprocating trimmingknife also mounted in said block, means to move said block to effect the feed of the work, said knife and abutment constituting the feeding devices of the machine and means to allow the said abutment to swing outwardly on the retrograde movement of the feeding devices, substantially as described.

7. In a machine for rounding or trimming the soles of boots and shoes, the combination with the main frame, of a block pivoted to swing horizontally in respect to said frame, an abutment mounted to swing on said block, and to slide vertically in respect thereto, a reciprocating trimming-knife mounted in said block, means to move the said block to effect the feed of the work, means to allow the abutment to swing outwardly on the retrograde movement of the feeding devices, and means for moving the said abutment in a vertical direction to guide the work to said trimming-knife, substantially as described.

8. In a machine for rounding or trimming the soles of boots and shoes, the combination with a main frame, of a work-table mounted on a horizontal slide, a spring for moving the slide to bring the table outward beyond the operative position whereby the spring is somewhat compressed during the operation of the machine, an abutment acting as a part of the feeding devices, means permitting the said abutment to swing outward during the retrograde movement, and a locking device for locking the said table and slide against movement under the pressure of the spring during such retrograde movement of the feeding devices, substantially as described.

9. In a machine for rounding or trimming the soles of boots and shoes, the combination with the trimmingknife, of an abutment for holding the sole against the thrust of the knife and for gaging the position of the same in respect to the knife, means for raising and lowering the said abutment, stops for limiting the extent of the movement of the abutment, the means for moving the abutment.

including friction devices, whereby injury by an overmovement of the raising and lowering mechanism is prevented, substantially as described.

10. In a machine for rounding or trimming the soles of boots and shoes, the combination with the abutment movable bodily in a vertical direction of a rock-shaft operatively connected with said abutment to move the same up or down, a slide operatively connected with said rock-shaft to move .it, means for actuating said slide including friction devices, and adjustable stops for limiting the movement of said slide substantially as described.

11. In combination with the abutment movable bodily in a vertical direction, of the shaft and crank-disk for moving said abutment, means for moving said crank-disk step by step in either direction, normally out of operation, a knee-lever for the operator connected with the means for actuating said crank-disk for bringing said actuating means into operationfor a momentary or greater movement at will, substantially as described.

12. In a machine for rounding or trimming the soles of boots and shoes, the combination with the abutment movable bodily in a vertical direction, of means for moving: said abutment including a double-pawl and doubleratchet mechanism, a movable shield normally holding both pawls from action, a knee-lever for the operator, and means connecting said shield and knee-lever whereby the said shield can be moved by the operator to throw either pawl into operation at will to raise or lower said abutment, substantially as described.

MARK THOMAS DENNE.

Witnesses:

WALTER W. BALL, F. H001). 

